Arris Touchstone TG2472 User Manual page 40

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If so, try a different phone. Make sure the new phone is a working phone.
•
If a known good phone is used and you still don't have dial tone, try a different
phone cable. If a new phone and cable do not restore dial tone, call your service
provider.
5. Is the Telephony Gateway plugged into a wall outlet?
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If so, unplug the phone connector at the back of the Telephony Gateway and plug in
a known working phone. If you now have dial tone, the problem is with the house
wiring. Contact your cable company or a qualified wiring technician to correct the
house wiring. If you still do not have dial tone, contact your service provider.
Release 24 STANDARD 1.1 January 2015 Touchstone TG2472 Telephony Gateway User Guide 40
Chapter 8: Troubleshooting